autoclosures.swift

// Awesome auto closures

class AwesomeType: CustomStringConvertible {
    init() {
        print("Initialize")
    }
    
    var description: String {
        return "Description of an awesome type"
    }
}


func awesomeAutoclosure(_ value: @autoclosure ()-> Any) {
    print("Before")
    print(value())
    print("After")
}

func notSoAwesomeNonAutoclosure(_ value: Any) {
    print("Before")
    print(value)
    print("After")
}

print("Awesome autoclosure")
awesomeAutoclosure(AwesomeType())
// Awesome autoclosure
// Before
// Initialize
// Description of an awesome type
// After

print("\n")

print("Not so awesome no autoclosure")
notSoAwesomeNonAutoclosure(AwesomeType())
// Not so awesome no autoclosure
// Initialize
// Before
// Description of an awesome type
// After